Migration of web applications deployed in previous versions of WebSphere® Application Server is usually not necessary. Versions 2.2 and later of the Java Servlet specification and versions 1.2 and 1.4 of the JavaServer Pages (JSP) specifications are still supported unless the behavior was changed in the Servlet 3.0 or JSP 2.1 specifications. These changes are generally available in more detail in their corresponding specification.
In WebSphere Application Server V8.0, the default JavaServer Faces (JSF) implementation has changed to MyFaces.
WebSphere Application Server Version 8 supports the Java Servlet 3.0 API.